Provided is a photoreactive azide-containing copolymer having sufficient biocompatibility for use in medical material applications. Further provided is a production method that enables the photoreactive azide-containing copolymer to be stably supplied on an industrial scale. It has been discovered that a photoreactive azide-containing copolymer can be synthesized according to a method that enables a stable supply on an industrial scale as a result of utilizing a polymer reaction between a glycidyl-containing copolymer and azidobenzoic acid, leading to the completion of the present invention.本發明的提供一種用於醫療材料用途的具有充分生物相容性的含光反應性疊氮基的共聚物，進一步，提供一種在工業規模中也能穩定供給該含光反應性疊氮基的共聚物的製備方法。本發明人發現，藉由使用含縮水甘油基的共聚物與疊氮苯甲酸的高分子反應，在工業規模下也能夠以能穩定供給的方法合成具有光反應性疊氮基的共聚物，從而完成本發明。
